如果m,n为有理数,且满足/m+n+2/+(m-2n+8)^2=0,则mn=____.(讲清楚,每一步都写出来,
问题描述:
如果m,n为有理数,且满足/m+n+2/+(m-2n+8)^2=0,则mn=____.(讲清楚,每一步都写出来,
答
如果m,n为有理数,且满足/m+n+2/+(m-2n+8)^2=0,则mn=____.(讲清楚,每一步都写出来,